From 1444dbf5569621a0db84a3d6e0493b3b4c1bed32 Mon Sep 17 00:00:00 2001
From: Pritam Chakraborty <47203359+prchakra@users.noreply.github.com>
Date: Tue, 29 Oct 2024 16:49:48 +0100
Subject: [PATCH] PWGCF / FemtoUniverse : Replacing mutnNtr with multV0M for
 multiplicity estimation

---
 ...ersePairTaskTrackTrack3DMultKtExtended.cxx | 25 ++++++++++---------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackTrack3DMultKtExtended.cxx b/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackTrack3DMultKtExtended.cxx
index d5b7c010acc..34aa7880338 100644
--- a/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackTrack3DMultKtExtended.cxx
+++ b/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackTrack3DMultKtExtended.cxx
@@ -134,7 +134,8 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
   Configurable<float> ConfV0MHigh{"ConfV0MHigh", 25000.0, "Upper limit for V0M multiplicity"};
 
   Filter collV0Mfilter = ((o2::aod::femtouniversecollision::multV0M > ConfV0MLow) && (o2::aod::femtouniversecollision::multV0M < ConfV0MHigh));
-  // Filter trackAdditionalfilter = (nabs(aod::femtouniverseparticle::eta) < twotracksconfigs.ConfEtaMax); // example filtering on configurable
+  using FilteredFDCollisions = soa::Filtered<aod::FDCollisions>;
+  using FilteredFDCollision = soa::Filtered<aod::FDCollisions>::iterator;
 
   /// Particle part
   ConfigurableAxis ConfTempFitVarBins{"ConfDTempFitVarBins", {300, -0.15, 0.15}, "binning of the TempFitVar in the pT vs. TempFitVar plot"};
@@ -412,7 +413,7 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
   template <typename CollisionType>
   void fillCollision(CollisionType col)
   {
-    MixQaRegistry.fill(HIST("MixingQA/hSECollisionBins"), colBinning.getBin({col.posZ(), col.multNtr()}));
+    MixQaRegistry.fill(HIST("MixingQA/hSECollisionBins"), colBinning.getBin({col.posZ(), col.multV0M()}));
     eventHisto.fillQA(col);
   }
 
@@ -563,7 +564,7 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
   /// process function for to call doSameEvent with Data
   /// \param col subscribe to the collision table (Data)
   /// \param parts subscribe to the femtoUniverseParticleTable
-  void processSameEvent(soa::Filtered<o2::aod::FDCollisions>::iterator& col,
+  void processSameEvent(FilteredFDCollision& col,
                         FilteredFemtoFullParticles& parts)
   {
     fillCollision(col);
@@ -574,15 +575,15 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
     bool fillQA = true;
 
     if (cfgProcessPM) {
-      doSameEvent<false>(thegroupPartsOne, thegroupPartsTwo, parts, col.magField(), col.multNtr(), 1, fillQA);
+      doSameEvent<false>(thegroupPartsOne, thegroupPartsTwo, parts, col.magField(), col.multV0M(), 1, fillQA);
     }
 
     if (cfgProcessPP) {
-      doSameEvent<false>(thegroupPartsOne, thegroupPartsOne, parts, col.magField(), col.multNtr(), 2, fillQA);
+      doSameEvent<false>(thegroupPartsOne, thegroupPartsOne, parts, col.magField(), col.multV0M(), 2, fillQA);
     }
 
     if (cfgProcessMM) {
-      doSameEvent<false>(thegroupPartsTwo, thegroupPartsTwo, parts, col.magField(), col.multNtr(), 3, fillQA);
+      doSameEvent<false>(thegroupPartsTwo, thegroupPartsTwo, parts, col.magField(), col.multV0M(), 3, fillQA);
     }
   }
   PROCESS_SWITCH(femtoUniversePairTaskTrackTrack3DMultKtExtended, processSameEvent, "Enable processing same event", true);
@@ -603,15 +604,15 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
     bool fillQA = true;
 
     if (cfgProcessPM) {
-      doSameEvent<false>(thegroupPartsOne, thegroupPartsTwo, parts, col.magField(), col.multNtr(), 1, fillQA);
+      doSameEvent<false>(thegroupPartsOne, thegroupPartsTwo, parts, col.magField(), col.multV0M(), 1, fillQA);
     }
 
     if (cfgProcessPP) {
-      doSameEvent<true>(thegroupPartsOne, thegroupPartsOne, parts, col.magField(), col.multNtr(), 2, fillQA);
+      doSameEvent<true>(thegroupPartsOne, thegroupPartsOne, parts, col.magField(), col.multV0M(), 2, fillQA);
     }
 
     if (cfgProcessMM) {
-      doSameEvent<true>(thegroupPartsTwo, thegroupPartsTwo, parts, col.magField(), col.multNtr(), 3, fillQA);
+      doSameEvent<true>(thegroupPartsTwo, thegroupPartsTwo, parts, col.magField(), col.multV0M(), 3, fillQA);
     }
   }
   PROCESS_SWITCH(femtoUniversePairTaskTrackTrack3DMultKtExtended, processSameEventMC, "Enable processing same event for Monte Carlo", false);
@@ -687,12 +688,12 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
   /// process function for to call doMixedEvent with Data
   /// @param cols subscribe to the collisions table (Data)
   /// @param parts subscribe to the femtoUniverseParticleTable
-  void processMixedEvent(soa::Filtered<o2::aod::FDCollisions>& cols,
+  void processMixedEvent(FilteredFDCollisions& cols,
                          FilteredFemtoFullParticles& parts)
   {
     for (auto& [collision1, collision2] : soa::selfCombinations(colBinning, 5, -1, cols, cols)) {
 
-      const int multiplicityCol = collision1.multNtr();
+      const int multiplicityCol = collision1.multV0M();
       MixQaRegistry.fill(HIST("MixingQA/hMECollisionBins"), colBinning.getBin({collision1.posZ(), multiplicityCol}));
 
       const auto& magFieldTesla1 = collision1.magField();
@@ -731,7 +732,7 @@ struct femtoUniversePairTaskTrackTrack3DMultKtExtended {
   {
     for (auto& [collision1, collision2] : soa::selfCombinations(colBinning, 5, -1, cols, cols)) {
 
-      const int multiplicityCol = collision1.multNtr();
+      const int multiplicityCol = collision1.multV0M();
       MixQaRegistry.fill(HIST("MixingQA/hMECollisionBins"), colBinning.getBin({collision1.posZ(), multiplicityCol}));
 
       const auto& magFieldTesla1 = collision1.magField();